| 改性壳聚糖-凹凸棒石复合絮凝剂絮凝采收小球藻 |
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| 引用本文： | 董锐, 王宁宁, 周健, 付澎. 改性壳聚糖-凹凸棒石复合絮凝剂絮凝采收小球藻[J]. 环境工程学报, 2016, 10(2): 709-716. doi: 10.12030/j.cjee.20160231 |
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| 作者姓名： | 董锐 王宁宁 周健 付澎 |
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| 作者单位： | 1. 盐城工学院化学与生物工程学院, 盐城 224051; 2. 安徽理工大学化工学院, 淮南 232001; 3. 南京工业大学理学院, 南京 210009 |
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| 基金项目： | 江苏省科技厅产学研联合创新基金项目(BY2013057-01) 江苏省环保厅环保科研课题资助项目(2013024) |
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| 摘 要： | 用3-氯-2-羟丙基氯化铵(CTA)季铵化改性壳聚糖(CTS),制备了季铵化改性壳聚糖(CTS-CTA);将壳聚糖(CTS)、阳离子淀粉(CS)、二甲基二烯丙基氯化铵(DMDAAC)进行三元接枝共聚,制备了三元接枝改性壳聚糖(CTS-DMDAAC-CS)。并且比较了壳聚糖(CTS)、季铵化改性壳聚糖(CTS-CTA)、三元接枝改性壳聚糖(CTS-DMDAAC-CS)对小球藻的絮凝效果,选择三元接枝改性壳聚糖与凹凸棒石进行复配,确定了最佳絮凝条件为:pH=8,絮凝剂与凹凸棒石的比例为1:14,沉降时间为20 min,絮凝剂投加量为0.4 g。在该条件下进行了重复实验,得出小球藻的絮凝率为98.8 %,并且絮体紧密、沉降速度快,不需要再次分离,具有很好的应用前景。
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| 关 键 词： | 壳聚糖季铵化 改性壳聚糖 三元接枝改性壳聚糖 凹凸棒石 絮凝 小球藻 |
| 收稿时间： | 2014-11-20 |
Flocculation of chlorella by composite of modified chitosan and attapulgite |
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| Dong Rui, Wang Ningning, Zhou Jian, Fu Peng. Flocculation of chlorella by composite of modified chitosan and attapulgite[J]. Chinese Journal of Environmental Engineering, 2016, 10(2): 709-716. doi: 10.12030/j.cjee.20160231 |
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| Authors: | Dong Rui Wang Ningning Zhou Jian Fu Peng |
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| Affiliation: | 1. School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224051, China; 2. School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China; 3. College of Sciences, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | The modified chitosan (CST-CTA) was synthesized by quaternization of the chistosan (CTS) with 3-chloro-2-hydroxypropyl ammonium chloride (CTA), and the three-component grafted chitosan (CTS-DMDAAC-CS) was prepared by grafting copolymerization of CTS, cationic starch (CS) and dimethyl diallyl ammonium chloride (DMDAAC). By comparing the flocculation effects of CTS, CTS-CTA and CTS-DMDAAC-CS against chlorella, it can be concluded that CTS-DMDAAC-CS possessed the best flocculation. Such a flocculation condition was optimized by compounding the CTS-DMDAAC-CS and attapulgite, 0.8 of pH value, 1:14 ratio of flocculant to attapulgite, 20 min of reaction time, and 0.4 g of the flocculant content. Under these conditions, the flocculant rate of chlorella could reach up to 98.8 %, and it showed small floc size, higher depositing rate and easy separation, which has a brilliant application prospect in industry. |
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| Keywords: | CTS CTS-CTA CTS-DMDAAC-CS attapulgite flocculation chlorella |
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